{
  "manageEntity": {
    "action": "Update",
    "entityId": "373466917",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x58f2eee747c12fc6235a37c94a33b4f991830ce6634e258a021cca00744e3599",
    "signature": "0x940dd0dd921845e2bb4c6a8aec64f309919801929f30394632650dd0d1bbc84f2e068be30902338333067ac82a9abbec33b7396a105706e392eda428650d01c11c",
    "signer": "0xcc9e1E88B008675950B42831dBBAB89396f1d8c3",
    "userId": "373466917"
  }
}